dictionary = {'卷心菜':'cabbage','午餐':'lunch','机器人':'robot','天空':'sky','花':'flower'}
print('中英文字典中所有中文词组')
for item in dictionary.items():
 print(item)
print('中英文字典中所有中文词组:')
for chinese in dictionary.keys():
 print(chinese,end='')
print('\n中英文字典中所有英文单词：')
for english in dictionary.values():
 print(english,end='')
